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公开(公告)号：US10772121B2
公开(公告)日：2020-09-08
申请号：US16300157
申请日：2017-05-08
发明人： Reem Karaki
摘要： A technique for transmitting uplink scheduling grant information (702) from a network node to a wireless device in unlicensed spectrum is described. As to a method aspect of the technique, a listen before talk (LBT) process is performed (202) on each of at least one carrier in the unlicensed spectrum. The uplink scheduling grant information is transmitted (304) on one of the at least one carrier in response to a positive result of the LBT process on the one carrier. The uplink scheduling grant information (702) is indicative of an uplink scheduling grant on multiple carriers in the unlicensed spectrum.
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公开(公告)号：US10681730B2
公开(公告)日：2020-06-09
申请号：US15300345
申请日：2016-07-08
发明人： Amitav Mukherjee , Jung-Fu Cheng , Sorour Falahati , Laetitia Falconetti , Du Ho Kang , Reem Karaki , Havish Koorapaty , Daniel Larsson
摘要： A method and network node for adaptation of contention windows in a multicarrier wireless communication system implementing a listen-before-talk protocol are disclosed. According to one aspect, a method includes determining at least one component carrier (CC), of multiple CCs to serve as a backoff channel. The method further includes performing a listen-before-talk procedure on the at least one CC serving as a backoff channel. The listen-before-talk procedure includes sensing for each backoff channel whether a clear channel exists during a backoff period drawn from a contention window (CW). The LBT procedure also includes deferring transmitting on a CC for which the sensing does not indicate that a clear channel exists. The LBT procedure also includes transmitting on a CC for which the sensing indicates a clear channel exists. The method also includes determining a size of the CW based on at least one transmission feedback value.
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公开(公告)号：US20190394802A1
公开(公告)日：2019-12-26
申请号：US16467007
申请日：2018-04-02
发明人： Reem Karaki , Havish Koorapaty , Jung-Fu Cheng , Sorour Falahati , Yu Yang , Amitav Mukherjee
摘要： A radio access node or wireless device performs LBT on a channel and dynamically determines a transmission starting point on the channel, based on whether the LBT succeeds before or after a slot boundary between a slot n and a previous slot n−1. In response to determining that the LBT succeeds before the slot boundary, a transmission scheduled for the slot n is extended to start earlier, in the previous slot n−1. Otherwise, in response to determining that the LBT succeeds after the slot boundary, either a transmission scheduled for a next slot n+1 is extended to start earlier, in the slot n, or a transmission scheduled for the a second mini-slot of the slot n is extended to start earlier, in a first mini-slot of the slot n.
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44.发明申请公开(公告)号：US20190191315A1
公开(公告)日：2019-06-20
申请号：US16325854
申请日：2017-08-23
发明人： Amitav Mukherjee , Reem Karaki , Evanny Obregon , Du Ho Kang
CPC分类号： H04W16/14 , H04B7/2615 , H04L5/0032 , H04W24/10 , H04W72/085 , H04W74/0808
摘要： A first wireless node of a wireless communication system is associated with a first cell having a first cell identity. The first wireless node obtains information relating to a set of wireless nodes which use at least one overlapping communication resource that is also used by at least one second node in the first cell. The first wireless node generates a preamble containing: a first data field designating the first cell identity, and a second data field reflecting a respective identity of the wireless nodes in the set of wireless nodes which use the at least one overlapping communication resource. The first wireless node transmits a preamble signal containing the preamble, over a predefined set of resources in a shared resource structure of the wireless communication system thus informing about the wireless nodes that use overlapping communication resources.
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公开(公告)号：US10257714B2
公开(公告)日：2019-04-09
申请号：US15513650
申请日：2014-10-02
发明人： Tim Irnich , Reem Karaki
IPC分类号： H04W16/10 , H04W24/02 , H04B17/345
摘要： Controlling utilization of a plurality of frequency channels in a cellular network by a node by using a channel selection algorithm which is based on an initial channel allocation and two consecutive sequences of channel allocation processes. The concepts described may be used for efficiently controlling utilization of a plurality of frequency channels in a cellular network. In particular, due to the consecutive search loops, an optimized allocation of frequency channels to a plurality of access nodes can be obtained in an automated manner, without requiring excessive measurements or trial of allocations.
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公开(公告)号：US20190090245A1
公开(公告)日：2019-03-21
申请号：US16080069
申请日：2017-02-28
发明人： Junaid Ansari , Reem Karaki
摘要： A technique for accessing a wireless channel by a station using an access technology in coexistence with the same or another access technology on the wireless channel is described. As to a method aspect, resources (302) on the wireless channel are allocated or an allocation (300) therefor is received at the station. The allocation is not uniquely associated with data to be transmitted by the station on the wireless channel. If data to be transmitted by the station on the wireless channel is available, a listen before talk (LBT) process is performed on the wireless channel or transmission is deferred to satisfy a time-averaged transmit constraint. The data is transmitted by the station using at least one of the allocated resources (302) on the wireless channel, if the LBT process indicates that the wireless channel is clear for the at least one allocated resource (302) or if the time-averaged transmit constraint is satisfied for the at least one allocated resource (302).
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公开(公告)号：US20190069324A1
公开(公告)日：2019-02-28
申请号：US16079707
申请日：2017-02-28
发明人： Junaid Ansari , Reem Karaki
摘要： A technique for transmitting on multiple frequency carriers in a radio access network (RAN) in potential coexistence with an interferer using at least one of the multiple frequency carriers is described. As to a method aspect of the technique, when there is a transmission on at least one first frequency carrier among the multiple frequency carriers in a transmit opportunity interval, a clear channel assessment (CCA) on at least one second frequency carrier among the multiple frequency carriers is performed before expiry of the transmit opportunity interval. If the at least one second frequency carrier is available according to the CCA, the transmission uses the at least one second 10 frequency carrier in the transmit opportunity interval.
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公开(公告)号：US12101787B2
公开(公告)日：2024-09-24
申请号：US18328900
申请日：2023-06-05
发明人： Reem Karaki , Jung-Fu Cheng , Yuhang Liu , Stephen Grant
IPC分类号： H04W72/23
CPC分类号： H04W72/23
摘要： There is disclosed a method of operating a receiving radio node in a wireless communication network. The method includes communicating utilising data signaling based on a received control information message, the control information message scheduling multiple occurrences of data signaling, wherein communicating is based on extracting a code block group (CBG) setup for communicating based on the received control information message and/or a CBG configuration. The disclosure also pertains to related devices and methods.
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49.发明公开公开(公告)号：US20240195593A1
公开(公告)日：2024-06-13
申请号：US18554510
申请日：2022-04-27
发明人： Luca Lunardi , Pablo Soldati , Vengatanathan Krishnamoorthi , Henrik Rydén , Reem Karaki , Angelo Centonza
IPC分类号： H04L5/00 , H04L41/142 , H04L41/147
CPC分类号： H04L5/0096 , H04L41/142 , H04L41/147
摘要： Embodiments include methods for a first network node of a wireless network. Such methods include determining a predicted modification in coverage and/or capacity, during a subsequent time period, of one or more of the following served by the first network node: one or more cells, and one or more reference signal (RS) beams. Such methods also include sending, to a second network node of the wireless network, a first message comprising an indication of the predicted modification in coverage and/or capacity. Other embodiments include complementary methods for the second network node, as well as network nodes configured to perform such methods.
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公开(公告)号：US20240107585A1
公开(公告)日：2024-03-28
申请号：US18535410
申请日：2023-12-11
发明人： Reem Karaki
CPC分类号： H04W74/0816 , H04W72/23
摘要： Systems and methods are disclosed herein for restricting autonomous uplink transmissions by a wireless device in a wireless communication system such that wireless devices performing autonomous uplink transmissions can coexist with wireless devices performing scheduled uplink transmissions in a cell requiring Listen-Before-Talk (LBT). In some embodiments, a method of operation of a wireless device in a wireless communication system comprises receiving, from a radio access node, an indication of which subframes belong to a same channel occupancy within a cell that requires LBT and restricting performance of autonomous uplink transmissions by the wireless device based on the indication of which subframes belong to the same channel occupancy. By restricting autonomous uplink transmissions in this manner, the wireless device can coexist with scheduled wireless devices in the same cell.
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